A critique of my text

The author who wrote this bibliography gave me useful information about ‘physical benefits of exercise’ which is one of ways to maintain good health. It was logical and well-organized text. His intended audience might be older than high school students because great wealth of knowledge is needed if readers want to understand every term. He had an underlying assumption which is that the major cause of death in Australia is heart disease. He compared last 10-year people who didn’t have regular exercise programmes with today people who have become involved in regular exercise programmes. It was helpful evidence for me to believe benefits of exercise.

However, from following paragraph, the author showed himself diffident. Because according to the paragraph, he neither convinced readers that his article is true, because of these words, ‘perhaps’, ‘seems’. These words were able for me to be confused that the fact is true or not. Also this sentence contained these words evoked a strong response from me. It was that ‘people who are overweight do not necessarily eat more than those with normal weight, but they do move less.’ It might not be true. In my opinion, when the people are at workplaces, they must be busy doing their own positions, sometimes they can have shiftworking, so their work time will be unstable. It can make people eat at night during working. It means that the environments of them could make people overweight. This sentence in this paragraph could make overweight people upset. In my opinion, the author should have had the exact words or supportable evidences in this part.